A 200-N block rests as shown on a wedge of negligible weight. The coefficient of static fr...

A 200-N block rests as shown on a wedge of negligible weight. The coefficient of static friction µsis the same at both surfaces of the wedge, and friction between the block and the vertical wall may be neglected, For P=100N, determine the value of µsfor which motion is impending. (Hint:Solve the equation obtained by trial and error.)